THEORY:
EX-SITU conservation is the technique of conservation of all levels of biological diversity outside their natural habitats through different techniques like zoo, captive,breeding aquarium, botanical garden and gene bank. Broadly, Ex Situ conservation includes a variety of activities, from arranging captive population, education and rising awareness, supporting research initiatives and collaborating with in isity efforts.
The gharia also known as the gavial and fish eating crocodile is a crocodile in the fraternity govialidicle , native to sandy freshwater river banks in the plains of the northern rivers of Indian subcontinent. Department of national parks of wild life conservation.
In response to the declining population of the unknown, the government of Nepal established the Ghrabal breed center in 1978 in Kasara in Chitwan National park.
The disappearance of Gharial from their historic range can be attributed to construction of barrage, excessive use of nets and habitat loss unsustainable fishing nets.
MATERIAL AND METHODS:
STUDY AREA:
Gharials from the breeding centres are left in Rapti, Narayani and two western Nepal rivers Babal and karnali. The two main rivers Narayani and rapti diclinate the north and west borders.
The Chitwan National Parks was established in 1973 and was listed in 1984 as a world heritage site by UNESCO for its varied biological resources and large no. of endangered species.
Further west, the Karnali river 30-snow-feed river organizing in the himalayan. The karnali forms the western boundary of Bardiya National Park and eventually flows to India.
In Nepal , the convenience of the Babai is the hundred of that of Rapti and the north, east, south and by the main Ghagra catchment on the west until their confluence.
METHODOLOGY:
Field surveys were conducted along the Narayani and Rapti river over several years between 2004 to 2016 and along the Babai and karnali rivers, in 2008, 2011 and 2016. The rivers were divided into transect length but were not consistent for survey, all sectors of the rivers with Gharials were converted during all surveys.
The survey was conducted from Nov through March, when Gharials were not likely to be asking. Thus some began after sunrise as clear days. While on foggy days, surveys were conducted from mid morning to midnight. Many studies have been done in this topic.